2024 Mazda CX-50

Bought this car in May 2026 with about 15k miles. Today November 6th 2026 at the dealership I was told that the belt tensioner was loose. Searching online it looks like a widely known issue that Mazda apparently has known but has not fixed. This should not happen on a car with 18k miles. If the belt fails while driving it can put everyone in the car and around it in physical danger. Please look into this. In all fairness CardinaleWay Mazda is fixing the issue under warrenty, but the bigger issue is safety.

NHTSA ID

11776172

Incident

Nov 6, 2026

Front license plate in OEM factory location interferes with forward radar sensor, causing phantom automatic emergency braking events in moving traffic. Vehicle came to complete stop in active traffic lanes on multiple occasions, creating severe collision risk. Removing the plate (in violation of California law) restored normal sensor function.

NHTSA ID

11771509

Incident

Oct 9, 2026

FORMAL VEHICLE SAFETY COMPLAINT Vehicle: 2024 Mazda CX-50 Subject: Repeated Unintended Emergency Braking, False Collision Warnings, and Persistent Braking-System Malfunction I am submitting a formal safety complaint concerning serious and recurring braking-system malfunctions involving my 2024 Mazda CX-50. The vehicle initially began displaying false collision and braking warnings despite there being no apparent hazard or obstruction. These warnings occurred repeatedly and eventually progressed to incidents in which the vehicle activated its automatic emergency braking system without justification. During one particularly dangerous incident, I was traveling approximately 75 mph on the freeway when the dashboard suddenly displayed a red braking warning and the vehicle automatically applied its brakes with extreme force. There was no apparent vehicle, pedestrian, or obstruction requiring emergency braking. The sudden and unexpected deceleration nearly resulted in a serious collision. These problems are not isolated. The vehicle continues to experience false collision alerts or unintended braking on an almost daily basis, even when no hazard is present. Additionally, the vehicle repeatedly displays the following warning: “Braking System Malfunction. Stop the Vehicle in a Safe Location.” This malfunction warning typically appears during morning operation and does not resolve simply by shutting off and restarting the vehicle. I have photographic documentation of the warning. Although the brake pedal generally feels normal during manual braking, the vehicle’s unexpected automatic braking is extremely forceful and creates a substantial danger to occupants and surrounding motorists. I am aware that Mazda issued Service Alert SA-007/24 concerning unintended Smart Brake Support operation involving certain Mazda vehicles, including the CX-50. I request that this information be considered when reviewing my complaint.

NHTSA ID

11770595

Incident

Aug 8, 2026

Component Failed & Availability: Goodyear tire structure/tread separation and delamination across all four tires; technician states delamination, belt separation on all four tires, structural failure, tire separating from the internal belt structure (steel belts showing, chunks of tread missing); available for inspection. Safety Risk: Severe risk of sudden blowout, loss of vehicle control, and highway accident due to structural failure and internal belt separation. Dealer/Center Confirmation: Confirmed as a manufacturer defect by American Tire Company during a routine maintenance rotation on July 3, 2026 (fully documented by their shop). Inspections: Inspected and documented by American Tire Company; Goodyear management reviewed the documentation and refused full replacement under the guise of wear and mileage. Warning Lamps / Symptoms: No warning lamps; structural delamination and internal belt separation discovered during routine maintenance. Detailed Summary Description: On July 3, 2026, a routine maintenance rotation at American Tire Company revealed a dangerous structural failure across all four Goodyear tires. The technician states delamination, belt separation on all four tires, structural failure, tire separating from the internal belt structure, with chunks of tread missing and steel belts exposed. When the defect was submitted to Goodyear, July 6, 2026) they refused full warranty replacement, demanding $48.57 per tire under the guise of "wear and mileage." When escalation was requested, company supervisor representative stated there was no higher authority than the supervisor and admitted that internal complaints are dead-ended in their files and never forwarded or reviewed. This stonewalling on a dangerous manufacturing defect poses a severe public safety risk.

NHTSA ID

11763531

Incident

Jul 3, 2026

This is the 2nd time I’m reporting that I was severely burnt on my thigh from my drivers seat heater, overheating. There are on going glass action law suits against Mazda for this issue. My 2024 CX-50 has not been in service at Olympia Mazda with no updates on repairs and when I will get my car back. Please help me!

NHTSA ID

11751806

Incident

Jun 21, 2026

I'm curious how many other Mazda owners are dealing with the same battery drain issue. I'm now on my third battery since 2024: Factory battery replaced under warranty in 2025. Second replacement purchased in March 2026. Within a month, the "Battery Low - Drive Vehicle to Recharge" warning was back. The dealer kept my vehicle for four days to monitor it, but they couldn't find anything abnormal. This started long before I had a dashcam professionally installed, so that's not the cause. I've read numerous posts on Facebook from other owners mentioning: A door module that can get wet after heavy rain and cause a parasitic battery drain. The key fob constantly communicating with the vehicle when it's within about 20 feet, potentially contributing to battery drain. I mentioned the door module issue to my dealer, but they said they had never heard of it. At this point, it's becoming incredibly frustrating. A modern vehicle shouldn't be going through batteries like this, especially when the dealer can't identify the root cause. I started to document the times that my dashboard warning pops up that the battery is low.

NHTSA ID

11750756

Incident

Jul 1, 2026

Driver of the vehicle was parking the vehicle in a parking lot, foot nowhere near the accelerator when the car suddenly surged forward striking a parking pole.. The driver side front quarter panel took on heavy damage along with the sensors.. Car had to be towed... It accelerated by itself...

NHTSA ID

11750004

Incident

Jul 10, 2026

I was attempting to mount my bike rack. To get the clips to properly fit I needed to partially open the liftgate. Upon triggering the door release the power liftgate and began opening the door. The anti pinch system did not detect the pinch and it crumpled the roof and liftgate at the seam. I tried to stop it but there was too much pressure and by the time it stopped lifting under my body weight significant damage had occurred. If a finger had been there it would have been chopped off.

NHTSA ID

11733496

Incident

Apr 24, 2026

Subject: Update – Campaign Warranty Claim Response Enhancements – Modules Not Repaired for Certain Campaigns Dear Mazda Dealer Colleagues, On October 28, 2026, a change was implemented in the warranty claim response screen to provide precise information for all campaigns requiring module programming or module replacement subject to the LECS system software checks. As previously announced, some claims were automatically rejected with the Edit code JN1 – One or More Modules Are Not Updated when submitting a campaign warranty claim. This response was based on the session file received from MDARS or MDARS II at the dealership and the VIN on the claim submitted. This change provides additional Related Information which enhances the edit code information. This information allows the dealer to correct the error without contacting Warranty or Hotline. Edit code JN1 now contains the actual module name and the software version that was collected from the car and what the minimum required software needed to be for the claim. Using this information, the technician can now identify the exact error or errors and correct the concern.

Some customers may complain about any of the following 1. Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote function(s) inoperative.

Mazda Connected Services - Frequently Asked Questions (FAQ) This Service Alert supersedes the previously issued SAs listed below. The changes are noted in Red text. SA-042/26 06/30/26 DESCRIPTION Frequently Asked Questions (FAQ) Index General Questions MAZDA CONNECT Indication Setup and Getting Started Dealer Processes Registration / Enrollment / Take-Over Customer Subscription Status WI-FI General Informatio Opening the TCU Communication Line WI-FI How-To Conditions for Remote Engine Start Will Not Function WI-FI Trial Period Conditions for Remote Engine Start Function Will turn engine OFF Interacting With The App TCU Communication Line Status Service Issues Educational Videos Troubleshooting Resources MyMazda App Error Codes Customer Opt-Out

DESCRIPTION If you encounter any type of electrical concern (e.g, dead battery, engine no start, DTC(s) stored...), interview the customer before proceeding with normal MGSS diagnosis by asking if any aftermarket devices have been installed. Aftermarket devices may be the cause of the electrical concern. Below are a few examples of unusual electrical concerns caused by aftermarket devices. Examples: 1. Devices connected to the DLC-2 (battery discharge/DTC stored) 2. Devices plugged into the 12V outlet 3. GPS tracking device (engine no start/battery discharge) 4. Dash cam (DTC stored) 5. Non-certified USB cable (Apple Carplay™/ Android Auto™ will not connect) 6. Over-sized wheels/tires (incorrect GPS location) 7. DTC C0023:14 8. Decorative trim and/or cover on the START/STOP ENGINE button

This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 08/18/26 and 06/15/26 DESCRIPTION Some customers may complain about any of the following: 1. Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App

This Service Alert supersedes the previously issued service alert listed below. The changes are noted in Red text. SA-038/26 06/15/26 DESCRIPTION Some customers may complain about any of the following: 1. Infotainment Center Display does not provide the Authorization Code (OTP) during the MyMazda App Connected Vehicle enrollment. 2. Remote functions inoperative. Engine Start / Stop Door Lock / Unlock Lights ON / OFF Climate Control 3. MAZDA CONNECT connected vehicle reception strength icon shows "X" or " ". Index MAZDA CONNECT 2 Center Display Status Icon MAZDA CONNECT 3 Center Display Status Icon Remote Engine Start Will Not Function Remote Engine Start Function Will turn engine OFF Customer Subscription Status TCU Communication Line Status